Oracle

Backup and restore of Oracle database users and tables can be done quickly and easily using the Plsql-developer tool.Full backup and recovery of Oracle database user data1. Backup1.1 pl/sql-> Tools, export user objects, optionsCommon user objects

1. Stored Procedures1.1. Prepare SQL--  Defining stored Procedure Create or replace procedure get_rax (salary in number,rax out  number) as    --need to pay taxes     bal number;begin     bal := salary - 3500;    if bal1.2. Preparing the JAR Package

Oracle Management, Backup and recoveryThe user who manages the database is the SYS, system, which can compare SYS to the chairman and the system to the general manager, the difference between the following1, the most important difference, the

Environment:Operating System: win7 ,CPU is inter pc Oracle server:oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit ProductionOracle Local client:Release 11.2.0.1.0 32bit ProductionPython version:python2.7.5 (Installation

　　It is important to understand the architecture of a technology, especially one that is so complex as the knowledge system of Oracle database. At the same time, personally, it is not necessarily a professional DBA personnel need to understand its

In Oracle8i or later, you can create the following two types of temporary tables:1. Session-specific Temporal tablesCREATE Temporary table_name>column specification>onCOMMIT PRESERVE ROWS;2. Transaction-specific temporal tablesCREATE Temporary

Groupadd OinstallGroupadd dbaGroupadd OperGroupadd AsmadminGroupadd ASMDBAGroupadd AsmoperUseradd-g oinstall-g dba,asmdba,asmadmin,asmoper GridUSERADD-G oinstall-g DBA,OPER,ASMDBA Oraclepasswd gridpasswd

Create a tableSql>create Table Classes (ClassId Number (2),CNAME varchar2 (+) ,Birthday Date);Add a fieldsql>alter Table Student Add (classId number (2));Modify field lengthSql>alter Table Student Modify (XM VARCHAR2 (30));Modify the type of the

Concept:The so-called subquery, that is, a select statement nested another or more Select statementsrequirements: Find and ID and last_name of all employees of Smith's DepartmentTarget: Staff Id,last_nameFrom:s_empcondition: s_emp.dept_id = ID of

1. Create a table in the target database1.1 Click the source table to copy the creation statement1.2 Modify the data type to match the target database, such as:String type: Character varying (20) >>>varchar2Number type: Numeric (19,2) >>>number (19,2

1, access to the operating system management tools2. Select the ODBC data source "32-bit or 64-bit"3, the list is the current database existing data source, right click the Add button, add the appropriate data source4. Select the ODBC driver for the

1. Installation PrerequisitesFirst make sure that your computer is not installed before, or that it has been installed and uninstalled. As for how to check if uninstall clean can look at the Oracle Uninstall step behind me. 2. Oraclethe installation.

http://oracle-internals.com/blog/links/http://coll15.mapyourshow.com/6_0/sessions/session-details.cfm?ScheduleID=5410LinksI ' ve compiled a list of links to sites containing oracle-related information. Internals-related Links

Today suddenly found that the Tnslistener service can not start, after the service console to start, refresh, and automatically return to the stop state, there is no error reported. And the SPL plus can be used normally.From Baidu found a similar

public static void Insertwithlob (OracleConnection conn){if (conn!= NULL && conn. state = = ConnectionState.Open){Try{String sqltext = "INSERT into Tb_nclob (Id,name,text) VALUES (1, ' Test ',: Text)";using (oraclecommand cmd = new OracleCommand

A recent project involves data-table queries of large data volumes. The total data table is about 700 million-2 billion, the primary key to establish a global unique index, the partition policy is hash partition + range partition, most of the time

Oracle Learning NotesAnalysis of SQL statement execution Process lecturesThis lesson goes into the database by telling a SQL statementand its entire execution process in the databaseString The architecture inside the database.Let's take a closer

For disks that are managed with ASM, you need a means to consistently identify disk devices and their proper owning relationships and permissions. In a Linux system, you can use Asmlib to perform this task, but the disadvantage of doing so is to add

Database files include data files, log files, control files and password files, parameter files, and so on, the management of these files can be considered as the process of adding and removing changes.1. Data file ManagementIncrease:Add a data file

1, install the Oracle 10g database and create the same instance of the database you want to recover (note: It is best to install a new database, and install the database as much as possible with the version of the database to be restored, and the